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car won't start intermittently

pittdood20

New CEG'er
Joined
Oct 13, 2004
Messages
5
Location
pittsburgh
i got in my car this morning to go to school and tried to start it but nothing. it would not crank but it sounded like the fuel pump turned on when i turned the key to the on position. i tried the headlights and they worked fine as well as the radio and the dome light came on. i pushed the car to the end of the driveway in attempts to push start it however i did not have enough momentum and the car caught in 3rd and lurched a little bit but did not start. i then turned the key as another attempt to start the car and it started. i drove to school and on leaving the car started fine, on the way home i stopped at a gas station to fill the car up. when i was done filling it up i tried to start it and nothing, no crank but all the lights on the dash came on along with the radio. i pushed the car down a little slope and was able to catch it in gear and it started. this was today. on saturday i had the same problem. the car will start everytime that i push start it and sometimes when i just turn the key it will start and then sometimes it wont start when i turn the key. what gives? ive had the car now for about 4 1/2 yrs. never replaced the battery, never replaced plugs or wires. i don't have much car knowledge. i drive a 98 csvt 2.5L MTX w/ 121k miles. any ideas/suggestions/reading information would be great. thanks for your help guys.
 
forgot something

forgot something

i forgot to add that i've had 2 cel lights on for about a month p1131 p1151. checked on here and it said O2 sensor. these lights coming on did not correspond to the start of the problem, the lights were on prior to the car not starting. but could this have anything to do with the problem. again i have very little mechanical knowledge
 
Test battery and starter.
Battery test.
http://www.contour.org/ceg-vb/showthread.php?t=3535

Starter
Test
http://www.autozone.com/servlet/UiB..._us/0900823d/80/1b/c3/4b/0900823d801bc34b.jsp

and how to
http://www.contour.org/ceg-vb/forumdisplay.php?f=54

P1131 (Bank 1 Upper Sensor) and P1151 (Bank 2 Upper Sensor). Check the items below.

The HEGO Sensor is monitored for switching. The code will set when the HO2S fails to switch due to circuit or fuel at or exceeding a calibrated limit.
Electrical:
· Short to VPWR or VREF in harness or HO2S
· HO2S circuit shorted to Ground
· Water in harness connector
· Open circuit
· Corrosion or poor mating terminals and wiring
· Damaged HO2S
· Damaged PCM (other DTCs should be present)

Fuel System:
· Excessive fuel pressure (stuck fuel pressure regulator, restricted fuel return lines, etc.)
· Leaking/contaminated fuel injectors or fuel pressure regulator
· Low fuel pressure or running out of fuel (fuel pump concern, fuel supply line restrictions, low fuel level, etc.)
· Vapor recovery system (stuck VMV, etc.)

Induction System:
· MAF contamination
· Air leaks between MAF and throttle plate
· PCV system / Other vacuum leaks
· Improperly seated engine oil dipstick

EGR System:
· Leaking gasket
· Stuck EGR valve / Leaking diaphragm or EVR

Base Engine:
· Oil overfill
· Incorrect cylinder compression
· Exhaust leaks before or near the HO2S
· Secondary air stuck on
 
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